Used OEM Original Apple Logic Board Working, A1706 Late 2016 Mode 3.3 GHz i7 256gb 16gb RAM Tested using latest industry hardware diagnostic software, Fresh pull from full unit.
NB OMS035 NB Desk Mount with Keyboard Tray for 19-27 Inch Screens Up to 9Kg Load Full Motion • Desk Stand offers comfortable viewing position that promotes healthy movements and requires minimum space at home or the office • Fits most 19 to 27 inch screens with ultra-wide foldable keyboard tray • Full motion mount with rotation 360°, swivel ±90° and Tilt angle +12° to -15° • The mount has an extension of 40” (1020 mm), retraction of 3.9” (100mm) and an upright lift distance of 18.9” (480mm) • Design includes a durable gas-strut to hover at any working position • Built-in extra shelf for phone and small goods storage • Supports load from 2 to 9 kg • Mounting VESA compliance 75×75 mm and 100×100 mm • Product dimensions: 24 x 7.3 x 14.4 cm Specifications: Specifications • NB Desk Mount with Keyboard Tray for 19-27 Inch Screens Up to 9Kg Load Full Motion • Desk Stand offers comfortable viewing position that promotes healthy movements and requires minimum space at home or the office • Fits most 19 to 27 inch screens with ultra-wide foldable keyboard tray • Full motion mount with rotation 360°, swivel ±90° and Tilt angle +12° to -15° • The mount has an extension of 40” (1020 mm), retraction of 3.9” (100mm) and an upright lift distance of 18.9” (480mm)
HP SPro 322pe Monitor Overview The HP SPro 322pe is a professional Full HD monitor built for daily business use. It delivers reliable performance and a clean design. As a result, it fits perfectly in offices and work-from-home setups. 21.5-Inch Full HD Display This monitor features a 21.5-inch Full HD resolution. Therefore, text appears sharp and easy to read. Moreover, images look clear and balanced. Because of this, it supports productivity tasks with ease. In addition, the compact size saves desk space. As a result, it works well in smaller work areas. Smooth and Stable Visual Experience The HP SPro 322pe offers smooth and stable visuals. Therefore, everyday tasks feel comfortable. In addition, scrolling and browsing look natural. This makes it suitable for long working hours. Eye Comfort for Long Sessions This monitor includes eye comfort features. As a result, it helps reduce eye fatigue. Moreover, the anti-glare screen improves visibility. Therefore, users stay focused throughout the day. Connectivity and Ease of Use The HP SPro 322pe includes essential connectivity options. As a result, it connects easily to most PCs. Moreover, setup is quick and straightforward. This saves time and effort. Professional Design and Flexibility The monitor features a simple and professional design. In addition, it supports VESA mounting. As a result, users can customize their workspace layout. Ideal for Office and Business Use This monitor focuses on efficiency and reliability. Moreover, it supports daily workloads without distraction. In conclusion, it is a solid choice for professional environments. Specifications: Display : 21.45″ VA Resolution : FHD (1920 X 1080) Connectivity: 1x HDMI 1.4, 1x VGA. Performance: 100Hz refresh rate for smooth motion, 5ms GtG response time.
Premium-grade trackpad replacement for MacBook Air 13″ M1 (Model A2338, 2020)—available in Silver and Space Gray—engineered to OEM specifications for flawless Force Touch response, smooth gesture control, and seamless aesthetic integration. Compatible With: MacBook Air 13-inch (2020, Model A2338) with Apple M1 chip. Part Type: Trackpad only—does not include the flex cable, Taptic Engine, or mounting brackets. Designed for professional technicians who will reuse original internal components. Finish Options: Silver: Matches Silver and Starlight MacBook Air finishes. Space Gray: Matches Space Gray and Midnight models for perfect color continuity. Silver: Matches Silver and Starlight MacBook Air finishes. Space Gray: Matches Space Gray and Midnight models for perfect color continuity. Force Touch Capable: Fully supports pressure-sensitive input and haptic feedback when paired with the original Taptic Engine and logic board—no loss of functionality. Precision Craftsmanship: Mirror-polished glass surface with exact curvature, texture, and click mechanism matching Apple’s original design for consistent performance and feel. Installation Requirements: Requires full bottom case disassembly and careful transfer of the original flex cable and Taptic Engine. Adhesive must be applied precisely to maintain structural integrity and sensor alignment. For professional use only.
The Lenovo L22E-30 21.5″ LCD Monitor is designed to enhance your viewing experience with clear and vibrant visuals. Whether you’re working, gaming, or streaming your favorite shows, this monitor delivers exceptional quality. With a full HD resolution of 1920×1080, the Lenovo offers crisp and detailed images. Enjoy true-to-life colors and sharp details that make every task more enjoyable. The sleek and modern design of the Lenovo 21.5″ LCD Monitor complements any workspace. Its slim profile and narrow bezels provide a clean and stylish look that fits seamlessly into your setup. This monitor features a 75Hz refresh rate and a 4ms response time, ensuring smooth and lag-free performance. Whether you’re watching videos or playing games, enjoy a seamless experience without any motion blur. The Lenovo 21.5″ LCD Monitor includes multiple connectivity options, including HDMI and VGA ports. Easily connect your computer, gaming console, or other devices for versatile use. Designed with your comfort in mind, this monitor features TUV Rheinland Eye Comfort certification. Reduce eye strain during extended use with flicker-free technology and a low blue light filter. Adjust the Lenovo to your preferred viewing angle with its tilt-adjustable stand. Find the perfect position for maximum comfort, whether you’re working on a project or watching a movie. In conclusion, the Lenovo L22E-30 21.5″ LCD Monitor offers a perfect blend of style, performance, and comfort. Upgrade your workspace today and enjoy an enhanced viewing experience with this versatile and reliable monitor. Specifications: Display : 21.5″ Resolution : 1920 x 1080 Refresh Rate : 75Hz Response Rate : 4ms
Remax F27 Fonzyr Desktop Fan – 5 W rechargeable fan with 360° adjustable airflow and multi-installation options.Compact (187×206 mm), lightweight, with fast Type-C charging (~2 h) and built-in 1,200 mAh battery. Model: Remax F27 Fonzyr Series Circulation Desktop Fan Power: 5 W, operates on 5 V/1 A power supply Rotation: 360° adjustable airflow for full-range ventilation Battery: Built-in 1,200 mAh rechargeable battery; Type-C charging, ~2 hours charging time Dimensions & Build: Approx. 187 × 206 mm, lightweight ABS plastic housing (~697 g) Installation: Designed for desktop use, wall mounting, or hanging—ideal for multi-location placement
The HyperX Pulsefire Haste 2 Core Wireless is an ultra-lightweight, high-performance gaming mouse designed for speed, precision, and long-lasting comfort. Featuring dual-mode wireless connectivity and an operating weight of just 70 grams, it delivers low-latency competitive gaming powered by a single AAA battery. ✅ Full Specifications: Model: HyperX Pulsefire Haste 2 Core Wireless (White Edition / 8R2E7AA) Interface / Connection: Dual Wireless Connection Modes: High-speed 2.4GHz Wireless (via included USB-A nano receiver) Bluetooth 5.2 (Power-efficient mode for casual use and multi-device pairing) Interface / Connection: Dual Wireless Connection Modes: High-speed 2.4GHz Wireless (via included USB-A nano receiver) Bluetooth 5.2 (Power-efficient mode for casual use and multi-device pairing) Performance & Sensor: Sensor Type: HyperX Custom Core Optical Sensor Max Resolution: Up to 12,000 DPI DPI Presets: 400 / 800 / 1600 / 3200 DPI Tracking Speed: 300 IPS Acceleration: 35G Polling Rate: Up to 1,000Hz (1ms response time) Performance & Sensor: Sensor Type: HyperX Custom Core Optical Sensor Max Resolution: Up to 12,000 DPI DPI Presets: 400 / 800 / 1600 / 3200 DPI Tracking Speed: 300 IPS Acceleration: 35G Polling Rate: Up to 1,000Hz (1ms response time) Switches & Durability: Main Left/Right Switches: Tactile TTC Gold Switches Switch Lifespan: Rated for up to 20 million clicks Total Buttons: 6 programmable buttons (including 2 thumb side buttons) Switches & Durability: Main Left/Right Switches: Tactile TTC Gold Switches Switch Lifespan: Rated for up to 20 million clicks Total Buttons: 6 programmable buttons (including 2 thumb side buttons) Material & Build: Durable solid-upper shell with low-friction PTFE skates for seamless gliding across cloth mouse pads Design & Form Factor: Lightweight, symmetrical ergonomic frame suitable for various grip styles (palm, claw, fingertip) Lighting Effects: Customizable onboard LED RGB lighting Battery & Power: Battery Type: User-replaceable, 1x AAA Alkaline Battery Battery Life: Up to 100 hours (on 2.4GHz mode) or up to 200 hours (on Bluetooth mode) Battery & Power: Battery Type: User-replaceable, 1x AAA Alkaline Battery Battery Life: Up to 100 hours (on 2.4GHz mode) or up to 200 hours (on Bluetooth mode) Security & Software: Fully compatible with HyperX NGENUITY software for button remapping, macro recording, and custom RGB profile management Compatibility: PC, Xbox Series X|S, Xbox One, PlayStation 5 (PS5), PlayStation 4 (PS4), and Mac Dimensions: Approx. 124.3 x 66.8 x 38.2 mm Weight: Mouse Only: Approx. 60 grams Operating Weight (with AAA battery): Approx. 70 grams Weight: Mouse Only: Approx. 60 grams Operating Weight (with AAA battery): Approx. 70 grams
The ViewSonic XG2409A 24″ 240Hz Gaming Monitor is built for gamers who need ultra-smooth and responsive performance. It features a 240Hz refresh rate, giving you ultra-fluid gameplay even in fast-paced scenes. With a 1ms response time, this monitor helps eliminate motion blur and ghosting, keeping visuals crisp and sharp. The Full HD resolution ensures clear image quality for gaming, work, or media. Its SuperClear® IPS panel provides vibrant colors and consistent brightness from any angle. This makes it ideal for competitive gamers and content creators alike. The ViewSonic XG2409A 24″ 240Hz Gaming Monitor includes AMD FreeSync™ support to prevent screen tearing and stuttering. This creates a seamless experience, especially in high-speed action games. It also supports HDR10, which improves contrast and detail in bright or dark scenes. Games, movies, and images look more lifelike and immersive. You’ll find useful connectivity options like HDMI and DisplayPort, giving you easy compatibility with consoles and PCs. There’s also a 3.5mm audio output for connecting your headphones or speakers. The ergonomic stand lets you adjust height, tilt, swivel, and pivot for all-day comfort. You can also mount it on a wall or arm with VESA support. An anti-glare screen reduces reflections and makes it easier to focus on gameplay, even in bright rooms. Its minimal design looks sleek and fits into any setup. In short, the ViewSonic XG2409A 24″ 240Hz Gaming Monitor offers fast refresh, clear visuals, and customizable comfort. It’s a powerful choice for gamers who want to stay ahead. Specifications: Display : 24″ IPS Resolution : 1920 x 1080 FHD Refresh Rate : 240Hz Response Rate : 1ms MPRT
WiWU A821CH 8‑in‑1 Stand & Dock – A foldable aluminum laptop stand with a built-in 8‑port USB‑C dock (two USB‑A, two USB‑C, HDMI 4K30, SD/TF, Gigabit Ethernet, PD 100 W).Enhances comfort, cooling, and functionality—perfect for decluttered, professional work setups. Model: WiWU A821CH Design: Sturdy aluminum alloy stand with foldable, portable design, hollow surface for cooling, and silicone pads to prevent slips Dimensions & Weight: Compact when folded (~400 g in aluminum) Docking Hub Ports: 2 × USB-C ports 2 × USB‑A 3.0 ports 1 × HDMI (up to 4K@30 Hz) SD + micro‑SD card slots 1 × RJ‑45 Gigabit Ethernet (1000 Mbps) Docking Hub Ports: 2 × USB-C ports 2 × USB‑A 3.0 ports 1 × HDMI (up to 4K@30 Hz) SD + micro‑SD card slots 1 × RJ‑45 Gigabit Ethernet (1000 Mbps) Power Delivery: USB-C PD 3.0 supports up to 100 W—can charge a laptop while using other ports Connectivity: HDMI supports up to 4K@30 Hz; Ethernet up to Gigabit speed Stand Features: Detachable base—can use stand and hub together or separately, with adjustable ergonomic angles and vents for airflow Durability: Aluminum alloy with frosted texture, scratch-resistant finish, tested to executive standards
Non-slip, skid-proof rubber feet designed to perfectly fit MacBook Air models A1466, A1369, and A1370—restoring grip, stability, and protection for your laptop’s base. Keep your MacBook Air steady and scratch-free with these high-quality replacement rubber feet, engineered to match the original Apple design for MacBook Air models A1466 (2010–2017), A1369 (11″ 2010–2011), and A1370 (11″ 2011–2015). These skid-proof rubber feet provide excellent traction on desks, tables, and other smooth surfaces, preventing unwanted sliding during typing or use. Made from durable, soft-touch silicone-rubber material, they also help protect your laptop’s bottom case from scratches and reduce vibration noise. Each set includes all necessary feet (typically 5 per MacBook Air model) with pre-applied adhesive for easy, secure installation. The matte black finish blends seamlessly with your MacBook’s original aesthetic. Ideal for restoring worn, missing, or damaged feet—whether due to age, cleaning, or accidental removal—this is a simple, affordable way to maintain your MacBook’s functionality and appearance. Note: Surface must be clean and dry for optimal adhesion. For best results, gently warm the adhesive before applying.
GSAN GS-3021 POS All in One Touch 15.6" - Intel i5 - 8GB - 128GB SSD with Customer Display Main Board: POS motherboard CPU: I5-3RD GEN Memory: DDR3 8GB Hard Disk: 128GB Power: External power supply Input: 110V-240V 50/63Hz 2A Output: 12V DC 8A 96W MAX Interface: 6 USB port 1 LAN port
The Lenovo ThinkVision T24d‑30 is a 24″ WUXGA (1920×1200) IPS monitor designed for professional and office use. It delivers crisp detail with a 16:10 aspect ratio and broad viewing angles. The panel features anti‑glare treatment and 300 cd/m² brightness to support long work sessions with reduced eye strain. This monitor includes diverse connectivity with HDMI, DisplayPort, and VGA inputs. It also offers a built‑in USB hub and integrated stereo speakers. Adjustable ergonomics with height, pivot, tilt, and swivel make it easy to position for comfort. The monitor supports VESA mount and includes low blue light and flicker‑free technologies for user comfort. Specifications: 24″ WUXGA (1920×1200) IPS display with 16:10 aspect ratio Anti‑glare panel with 300 cd/m² brightness for clear visuals HDMI, DisplayPort, and VGA inputs for versatile connectivity Built‑in USB hub and integrated stereo speakers Adjustable height, tilt, swivel, and pivot stand with VESA support
HP P24v G5 Monitor Overview The HP P24v G5 is a 24-inch Full HD monitor designed for everyday work. It delivers clear visuals and reliable performance. As a result, it suits offices, home setups, and study spaces. 24-Inch Full HD Display This monitor features a 24-inch Full HD resolution. Therefore, text appears sharp and easy to read. Moreover, images look clear and well defined. Because of this, it supports long working sessions comfortably. In addition, the screen size fits most desks well. As a result, it balances clarity and space efficiency. Smooth Visual Performance The HP P24v G5 provides smooth visuals for daily tasks. As a result, scrolling and browsing feel natural. Furthermore, the display maintains consistent brightness. This improves overall viewing comfort. Eye Comfort and Anti-Glare Screen This monitor includes eye comfort features. Therefore, it helps reduce eye strain. In addition, the anti-glare coating limits reflections. As a result, the screen stays clear in bright environments. Connectivity and Compatibility The HP P24v G5 includes HDMI and VGA ports. As a result, it connects easily to new and older devices. Moreover, setup remains quick and simple. Therefore, users can start working immediately. Design and Mounting Options The monitor features a clean and professional design. In addition, it supports VESA mounting. As a result, users can create a flexible workspace. Ideal for Office and Home Use This monitor focuses on reliability and efficiency. Moreover, it suits office work, browsing, and media viewing. In conclusion, the HP P24v G5 is a practical Full HD monitor for daily use. Specifications: Display Quality: 23.8-inch IPS panel with 1920 x 1080 resolution at 100 Hz, offering 99% sRGB color for accurate visuals. Performance: 100Hz refresh rate and 5ms GtG response time with overdrive minimize screen tearing and ghosting. Connectivity: Equipped with HDMI 1.4 and VGA ports for versatile connectivity.
Looking for a high-quality monitor to elevate your viewing experience? Meet the BenQ EW3270U 32″ 4K HDR Monitor. With its impressive 4K resolution, every detail comes to life with stunning clarity. Firstly, let’s talk about the brilliance of HDR technology. Experience richer colors and deeper contrasts that make images and videos pop off the screen. Whether you’re watching movies, gaming, or editing photos, HDR brings content to life like never before. Moreover, the spacious 32-inch screen provides ample space for multitasking and immersive entertainment. Whether you’re working on spreadsheets or enjoying your favorite games, you’ll appreciate the expansive display and crisp visuals. Additionally, the BenQ EW3270U offers advanced eye care features to reduce eye strain during long hours of use. With flicker-free technology and low blue light modes, you can enjoy extended viewing sessions comfortably. Furthermore, connectivity options abound with multiple ports, including HDMI, DisplayPort, and USB-C. Easily connect your devices and enjoy seamless integration with laptops, desktops, gaming consoles, and more. In conclusion, the BenQ EW3270U 32″ 4K HDR Monitor is the perfect choice for those seeking superior visual quality and immersive viewing experiences. Whether you’re a professional creator or a casual user, this monitor delivers unmatched performance and versatility. Upgrade your setup today and see the difference for yourself. Specifications: Display : 31.5″ VA HDR 10 Resolution : 4K UHD Refresh Rate : 60Hz Response Rate : 4 ms Built-in Speaker : 2Wx2
The ViewSonic 22″ 75Hz Monitor offers a superb viewing experience with its high-quality display. Whether you’re working, gaming, or watching videos, this monitor delivers vibrant and crisp visuals. With Full HD 1080p resolution, the ViewSonic 22″ 75Hz Monitor provides sharp and clear images. Enjoy your favorite content with stunning detail and lifelike colors, making every viewing session a pleasure. The 75Hz refresh rate ensures smooth and fluid motion, reducing screen tearing and stuttering. This makes the ViewSonic 22″ 75Hz Monitor ideal for gaming and fast-paced videos, enhancing your overall experience. Designed for comfort and convenience, this monitor features an anti-glare screen to reduce eye strain. The ViewSonic 22″ 75Hz Monitor also has a flicker-free technology and blue light filter, ensuring a comfortable viewing experience even during extended use. Connectivity is a breeze with the ViewSonic 22″ 75Hz Monitor. It comes with HDMI and VGA ports, allowing you to connect a variety of devices with ease. Whether it’s your computer, gaming console, or media player, this monitor has you covered. The sleek and modern design of the ViewSonic 22″ 75Hz Monitor complements any workspace or gaming setup. Its slim profile and minimalistic stand make it a stylish addition to your desk, saving space without compromising on performance. In conclusion, the ViewSonic 22″ 75Hz Monitor combines high resolution, smooth refresh rate, and ergonomic design for an exceptional viewing experience. Upgrade to the ViewSonic 22″ 75Hz Monitor today and enjoy superior performance and style. Specifications: Display : 22″ IPS Resolution : FHD 1920 x 1080 Refresh Rate : 75Hz Response Rate : 5ms GTG
The Samsung 27″ 120Hz Essential S3 Monitor LS27F320GAMXUE delivers clear and smooth visuals with a Full HD (1920 × 1080) resolution and 120 Hz refresh rate, which helps reduce motion blur and lag during fast‑moving scenes. Additionally, the IPS panel provides wide viewing angles and consistent color across the screen, making it suitable for work, entertainment, and casual gaming. The monitor includes Game Picture Mode to optimize contrast and color settings for different game genres. Moreover, Samsung equips this monitor with Eye Saver Mode and Flicker Free technology to help reduce eye strain during extended use. Therefore, users can stay comfortable during long work or play sessions. The design features a modern, slim bezel look that enhances any desk setup. Connectivity includes two HDMI 1.4 ports for flexible device connection. Specifications: Display : 27″ Resolution : 1920 x 1080 FHD Refresh Rate : 120Hz Response Rate : 5ms
The LG 27″ 240Hz UltraGear OLED Gaming Monitor | 27GR95QE-B delivers ultra-fast visuals and rich colors for gaming and media.It features a 2560 × 1440 QHD OLED display for deep blacks and vivid images.Moreover, the smooth 240 Hz refresh rate keeps motion fluid during intense play. This monitor has an extremely fast 0.03 ms (GtG) response time to reduce blur and ghosting.Additionally, its OLED panel supports HDR10 for better contrast and more lifelike scenes.Adaptive sync technologies like FreeSync Premium and G-SYNC help reduce screen tearing and stutter. The LG 27″ 240Hz UltraGear OLED Gaming Monitor | 27GR95QE-B includes HDMI and DisplayPort inputs for easy connections.Furthermore, it has USB ports for peripherals and accessories.Anti-glare and wide 178° viewing angles keep images clear from many positions. This gaming monitor fits well on desks, gaming stations, and work setups.Therefore, it works for competitive gamers and creative content use.Finally, this monitor combines speed, picture quality, and flexibility for daily play and entertainment. Specifications: 27″ (26.5″ viewable) QHD 2560 × 1440 OLED display 240 Hz refresh rate and 0.03 ms (GtG) response time HDR10 with 1.5M:1 contrast and DCI-P3 98.5 % color gamut 2× HDMI + DisplayPort + USB-B upstream + 2× USB-A downstream Anti-glare panel with 178° wide viewing and adaptive sync
Ready to take your gaming setup to the next level? Look no further than the ViewSonic 32” 75Hz FHD Monitor VA3209-MH. This monitor offers a perfect blend of performance and immersion for gamers. With a generous 32-inch display, immerse yourself in stunning Full HD visuals. Every detail pops with clarity and vibrancy, bringing your favorite games to life in vivid color. Transitioning to performance, the VA3209-MH boasts a smooth 75Hz refresh rate, ensuring fluid motion and reduced motion blur during fast-paced gaming action. Say goodbye to screen tearing and hello to seamless gameplay. Moreover, this monitor features built-in speakers, eliminating the need for external audio devices. Immerse yourself in crystal-clear sound as you explore virtual worlds and engage in epic battles. The ViewSonic 32” 75Hz FHD Monitor VA3209-MH is designed with your comfort in mind. Its ergonomic stand allows for customizable tilt adjustments, ensuring optimal viewing angles for extended gaming sessions. In addition, connectivity options such as HDMI and VGA ports offer versatile compatibility with various gaming consoles and devices. Switch between platforms seamlessly and enjoy your favorite games without limitations. In conclusion, the ViewSonic 32” FHD Monitor VA3209-MH is a game-changer for gamers seeking immersive experiences. With its stunning visuals, smooth performance, and built-in speakers, it delivers everything you need for an unforgettable gaming journey. Upgrade your setup today and elevate your gaming to new heights. Specifications: Display : 32″ IPS Resolution : FHD(1920×1080) Refresh Rate : 75Hz Response Rate : 4ms
A reliable, budget-friendly Genius KM-100SE wired keyboard and mouse combo featuring a spill-resistant keyboard, ergonomic design, and plug-and-play USB connectivity—ideal for home, office, or classroom use. Spill-resistant design with drainage holes to protect against accidental liquid damage Quiet, low-profile keys with standard layout (including numeric keypad) for comfortable typing Durable construction with a lifespan of up to 10 million keystrokes Integrated wrist rest for improved ergonomics during long sessions Ambidextrous 3-button design with scroll wheel 1000 DPI optical sensor for smooth, precise tracking on most surfaces Ergonomic shape for comfortable right- or left-handed use Plug-and-play USB connection—no drivers required Compatible with Windows, macOS, Linux, and ChromeOS 1.5-meter braided cable for tangle resistance and durability
Acer Nitro VG240YSbmiipx 23.8 inchSize Name: 23.8 Style Name: FHD, 165Hz, DP Pattern Name: Single Screen size 23.8 Inches Display resolution maximum 1920 x 1080 Pixels Brand ACER Special feature Blue Light Filter, Tilt Adjustment, Frameless, Flicker-Free Refresh rate 165 Hz Discover the joys of a seamless game experience with Radeon FreeSync, in vivid IPS With a 165Hz refresh rate and 1ms Visual Response Boost (VRB) technology, gameplay is seamless and practically blur-free An IPS panel lets you view your display clearly at angles of up to 178 degrees while maintaining the same level of high-quality colour Take in the full view of the display with its ZeroFrame design atop the sharply-cut three-pronged stand No need to fiddle with buttons Easily modify your monitor settings via the Display Widget utility software
